Asian Openbill vs Great Bittern

Anastomus oscitans compared with Botaurus stellaris

Key Differences

• Asian Openbill is Least Concern while Great Bittern is Critically Endangered.

Taxonomic Classification

Rank	Asian Openbill	Great Bittern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Ciconiiformes (Ciconiiformes)	Pelecaniformes (Pelecaniformes)
Family	Ciconiidae	Ardeidae
Genus	Anastomus	Botaurus
Species	Anastomus oscitans	Botaurus stellaris

Evolutionary Relationship

Asian Openbill and Great Bittern share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Asian Openbill

LC — Least Concern

Great Bittern

CR — Critically Endangered

Physical Characteristics

Attribute	Asian Openbill	Great Bittern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Asian Openbill

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in Norway.

Great Bittern

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 8 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, Denmark, Norway, Russia, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Asian Openbill

The Asian Openbill (Anastomus oscitans) is a species in the genus Anastomus. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments. Found in Norway.

Great Bittern

Great Bittern (Botaurus stellaris) is classified as Critically Endangered (CR) on the IUCN Red List. Facing an extremely high risk of extinction in the wild due to severe population decline and habitat loss.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway